12111110001101 has 4 divisors (see below), whose sum is σ = 12132853466652. Its totient is φ = 12089366535552.

The previous prime is 12111110001037. The next prime is 12111110001121. The reversal of 12111110001101 is 10110001111121.

It is a happy number.

12111110001101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5420636307076 + 6690473694025 = 2328226^2 + 2586595^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111110001101 - 2⁶ = 12111110001037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111110001121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10871731940 + ... + 10871733053.

It is an arithmetic number, because the mean of its divisors is an integer number (3033213366663).

Almost surely, 2^{12111110001101} is an apocalyptic number.

It is an amenable number.

12111110001101 is a deficient number, since it is larger than the sum of its proper divisors (21743465551).

12111110001101 is an equidigital number, since it uses as much as digits as its factorization.

12111110001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21743465550.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 12111110001101 its reverse (10110001111121), we get a palindrome (22221111112222).

The spelling of 12111110001101 in words is "twelve trillion, one hundred eleven billion, one hundred ten million, one thousand, one hundred one".